1# Copyright 2017 - The Android Open Source Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15"""File-related utilities."""
16
17import contextlib
18import os
19import tempfile
20
21
22@contextlib.contextmanager
23def UnopenedTemporaryFile(**kwargs):
24  """Creates and returns a unopened temprary file path.
25
26  This function is similar to tempfile.TemporaryFile, except that an
27  unopened file path is returend instead of a file-like object.
28  The file will be deleted when the context manager is closed.
29
30  Args:
31    **kwargs: Any keyward arguments passed to tempfile.mkstemp (e.g., dir,
32      prefix and suffix).
33
34  Returns:
35    An unopened temporary file path.
36  """
37  fd, path = tempfile.mkstemp(**kwargs)
38  os.close(fd)
39
40  try:
41    yield path
42  finally:
43    if os.path.exists(path):
44      os.unlink(path)
45